On my main slide, I added bookmarks (located after the slide audio). The bookmarks open an overlay slide with audio. If I jump to the first bookmark before the main slide audio is finished, the overlay opens and the overlay audio plays; however, the main slide audio also starts over and plays at the same time. If I wait for the main slide audio to end and jump to the first bookmark, it does not happen.

Note - it works fine in preview but not after publishing.